marcotte



C. MARCOTTE. FIRE-PROOF JOINT FOR BUILDINGS.

MPEERS. PHOTO-LITHOGRAPHER WASNINGIDN` C PATENT Prion;

GITQREES MROTTE, OF ST. LOUIS, MISSOURI.

Specification forming![a'ri'm'fV Eettrslltent No. 195, lligdatedseptember 25, 1877; application iled August 3, 1877.

To all whom it mag/concern Be it known that I, CHARLES MARGOTTE, of St. Louis, in the 4county of St. Louis, and State of Missouri, have invented an Improved Fire-Proof Joint for Buildings, .of which the following is a specification:

In the ordinary construction of buildings it is well known that the door-joists in line with the studs (stud partitions) are spaced some distance apart, creating openings through which, in case of re, the flames reach and travel between said joists, and also between the said studs, all of which, therefore, facilitate the fire to communicate and spread from one part of the bnildingfto another.

The object of my invention is to prevent this,

and specially to form a tire-proof joint to exist between the door-joists inline with the studs above and below, also in the angles of a building, and where said stud partitions exist. The nature of my invention, therefore, consists in the peculiar manner and means, herev inafter pointed out in the claims, to accomplish the objects stated, and to achieve the new ref sults and advantages resulting from a tireproof' system of construction of those parts of a building referred to.

Of the drawings, Figure l is a longitudinall section on line of joists, having studs above and below, and of the contiguous apartments, showing the joint as per my improvement.

Fig. 2 is a transverse section through the' joists, and showing my improved construction. Fig. 3 is a front sectional view of joists and filling on line of m w of Fig. 4. Fig. 4 is a top sectional plan. Fig. 5 is a top sectional plan on linear' x' of Fig. 3. Fig. 6 is a plan/view of the plate I use to support the parts.

A are the joists, which rest in the walls, as usual. In my case, also, the top and bottom wooden-` plates a c' are used. B represents the stud partitions.

My improvement consists in providing a filling, which can consist of bricks, stone, concrete, cement, plaster, or any well-known nonconibustible material, and with which I fill or close the openings that exist between the floorjoists in line with the stud partitions.

C represents this filling or fire-proof material. (See Figs. 1, 2, 3, 4, 5.) Further, my improvelnent consists in causing or making the filling C to extend below the ceiling and above the iloor, to afm d additional protection against re. For this purpose the ordinary plates a a are somewhat above and below their wellknown positions, and' thc distance said plates are removed the filling C is made to occupy. (See Figs. l, 2, in which c is the floor and c the ceiling.) The filling O forms, therefore, in the corners, the'required tire-proof joint, (above the ooring and below the ceiling,) and hence the flames cannot reach or communicate to the adjoining apartments by way of said corners. Also, my improvement consists in using a plate, D, together with connectingrods d and bolts d1 d2. (See figures.) The said parts are to support the upper sections and partitions, in case the partition which is intended to be the permanent support is burned or consumed. Both partitions (upper and lower) can be united by passing the rods through the filling C, the lower end of the rod being secured below the plate D, the upper end of rod running above and being secured to the upper plate A. (See Figs. 1, 2, 3, 4.) The same fastening can be extended to the upper-story partitions to form a stronger truss in large spans, the design of said truss being, as stated, to support the upper structure independent of the partition that may be consumed.

The plate D can be plain or with ribs d3, (see Figs. 1, 6,)and built flush with the wooden plates a a', or made to project on each side thereof. Said plate D can further consist of iron, or slate slabs, or other iireproof material. As shown, the plate D rests directly above the lower plate a the lling O is between said plate D and the upper plate a. The filling can be of any width required or thickness. The joists can be laid close together, and the filling used top and below, and the joint secured, as described, to achieve the same tire-proof construction. By my invention, therefore, the studs are effectually closed throughout their length at top and below; also, the ends of the joists are closed by a continuous dre-proof wall from the lower story to top. The draft is, therefore, by this re-pbof joint checked, and the flames are conned; also, this construction aords protection against vermin, and in every other respect my invention isa most desirable improvement.

What I claim is- 1. The filling or fire-proof material, in combination with joists, wooden plates, and stud partitions, as and for the purpose set forth.

2. The filling of fire-proof material above the oor and below the ceiling, in combination with joists and stud partitions, as and for the purpose set forth.

3. The truss, consisting of' a plate with or without ribs, the rods and bolts, in combination with the lling C, plates a a', joists and stud partitions, as and for the purpose set forth.

4. The filling C, plate D, rods d, bolts d1 d, in combination with plates a a', joists A, and stud partitions B, to form an improved fireproof joint, as and for the purpose set forth.

In testimony of said invention I have hereunto set my hand.

CHARLES MARCOTTE.

Witnesses:

WILLIAM W. HERTHEL, JOHN W. HERTHEL. 

